Does anyone actually think about killing birds when they use the expression? I use it frequently and I must admit that I don't. To me it's just a figure of speech. It has no direct meaning in terms of killing anything.

As an aside I was thinking about this when I was out feeding the birds earlier. I asked some pigeons about it and they assured me that no one had bagged two of them with one stone within living memory. I must acknowledge that since they were speaking with their beaks full, I guess I could have misunderstood what they were trying to squawk.

- Pfranz